Well, I didn't think they were blatantly overpowered before. A shotgun is a crapload of kinetic energy that very little is rated to resist. Most body armors fail simply because shot finds an unarmored spot to hit. The spreads were excessive, though.
The new version is much better. Chokes only have 3 settings: narrow, moderate, and wide. Narrow hits a single target with standard flechette damage, the normal armor penetration (AP) +2 but with a -2 to dodge. Moderate choke can hit 2 targets who are within 1m of each other, the targets have -4 to dodge but the DV is at -2 and the AP is at +4 (I think). Wide can hit up to 3 targets, -6 to dodge, -4 DV, AP +6. One roll applies to all targets equally.
The reduced DV and increased AP means that most damage will be stun, barring a really good shot. Even then the target will have lots of dice for resistance (Body + Armor + AP). The CMD becomes very balanced. Combine a Narrow burst with a moderate choke and your target is at -4 to dodge, the DV is unmodified, but they get +4 AP dice to resist. Basically -4+4=0, though since you nerfed dodge you increase the odds of hitting when the opponent otherwise would have gotten out of the way.